There is an article/interview with Elizabeth Estensen in the Inside Soap magazine which is out today (week of 11 - 17 Nov 2006). The article is on pages 18 and 19 and for a couple of paragraphs there is a mention of T-Bag.
I've scanned page 19 (with the mention of T-Bag) which you can see below.
Public adoration is something Liz has been used to for many years now. As villainess T-Bag in the eponymous 80s kids' TV series, she was thoroughly evil - but her crazy character was hugely popular with fans of the show. "The impact that programme has was enormous," she admits. "People still come up to me and tell me it was their favourite show when they were children. I think they loved T-Bag because she was both frightening and funny, and because I got to wear such fantastic costumes. Mind you, I saw an episode recently, and it looked incredibly unsophisticated!"